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<a href="asio_2server__socket_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &quot;<a class="code" href="net__flow__fwd_8hpp.html">flow/net_flow/net_flow_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &quot;<a class="code" href="server__socket_8hpp.html">flow/net_flow/server_socket.hpp</a>&quot;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceflow_1_1net__flow_1_1asio.html">flow::net_flow::asio</a></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>{</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"></span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment">/**</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment"> * A net_flow::Server_socket that adds integration with boost.asio.  See net_flow::Node for a discussion of the topic of</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="comment"> * boost.asio integration.  A net_flow::asio::Server_socket *is* a net_flow::Server_socket with all that functionality,</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment"> * plus APIs (mainly async_accept()) that accomplish boost.asio-style asynchronous operations with a</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"> * standard `boost::asio::io_context`.</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment"> *</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment"> * As of this writing, `asio::Server_socket::Ptr`s are generated by `net_flow::Node::listen()` and any derivatives.</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment"> * The underlying `io_context` (a/k/a flow::util::Task_engine)</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment"> * is carried forward from the `net_flow::asio::Node` factory object that generated and returned the `Ptr`.  It can be</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment"> * overwritten via set_async_task_engine().</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment"> */</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html">   38</a></span><span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html">Server_socket</a> :</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>  <span class="keyword">public</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Server__socket.html">net_flow::Server_socket</a></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>  <span class="comment">// Note: can&#39;t derive util::Shared_ptr_alias_holder&lt;&gt;, because superclass already did it (doc header disallows this).</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>{</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="comment"></span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment">  /// Short-hand for `shared_ptr` to Server_socket.</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ac7ed30d29e4ba6f344e58299ed343773">   46</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ac7ed30d29e4ba6f344e58299ed343773">Ptr</a> = boost::shared_ptr&lt;Server_socket&gt;;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"></span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment">  /// Boring `virtual` destructor as in superclass.  See notes there.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"></span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2e4fc3f1516d1e3af68eb669aace3704">~Server_socket</a>() <span class="keyword">override</span>;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment"></span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment">   * Pointer (possibly null) for the flow::util::Task_engine used by any coming async I/O calls and inherited by any</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment">   * subsequently generated Peer_socket objects.</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment">   *</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment">   * One, this is used by `this-&gt;async_accept()` I/O calls, both</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment">   * synchronously and during the async phases of such calls, whenever placing a user-supplied handler routine</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment">   * onto an `Task_engine`.  Whatever async_task_engine() returns at that time is the `Task_engine` used.</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment">   *</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment">   * Two, when sync_accept() creates Peer_socket, at that moment this is used.  Hence, the initial value</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment">   * returned by Peer_socket::async_task_engine() is thus inherited from</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment">   * the factory Server_socket&#39;s async_task_engine() result.</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment">   *</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment">   * ### Thread safety (operating on a given Node) ###</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment">   *</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment">   *   - set_async_task_engine() is the only way to change the returned value, upon construction.</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment">   *   - It is not safe to call set_async_task_engine() at the same time as async_task_engine().</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment">   *   - Define &quot;any async op&quot; as Server_socket::async_accept() and all its variants, including actions it takes</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="comment">   *     in the background (asynchronously).</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment">   *     - async_task_engine() must return the same value -- and *not* null -- throughout &quot;any async op.&quot;</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment">   *   - Define &quot;any async inheriting op&quot; as any (non-blocking) Server_socket::accept() method (which creates a</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment">   *     Peer_socket.</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment">   *     - async_task_engine() must return the same value -- possibly null -- throughout &quot;any async inheriting op.&quot;</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="comment">   *   - Put simply, a null `Task_engine` can be inherited by a generated socket, but a null cannot be used when</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="comment">   *     performing an async op.  Furthermore, set_async_task_engine() is unsafe through any of those and through</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="comment">   *     async_task_engine() itself.</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment">   *</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span><span class="comment">   * Informal tip: Typically you&#39;d never call set_async_task_engine(), hence there is no problem.  If you DO need to</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span><span class="comment">   * call it, even then normally it&#39;s easy to ensure one does this before any actual async calls are made.</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="comment">   * Trouble only begins if one calls set_async_task_engine() &quot;in the middle&quot; of operating the socket.</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment">   * There is no way to add outside locking to make that work, either, due to async &quot;tails&quot; of some calls.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment">   *</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment">   * @return Null or non-null pointer to `Task_engine`.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">   */</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>  <a class="code hl_typedef" href="namespaceflow_1_1util.html#ac3e89a8a271b0ddc76ac2a0ce488dea4">util::Task_engine</a>* <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a88c5b9b8fee3429f28d9f1dfbe1359c2">async_task_engine</a>();</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment"></span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment">   * Read-only version of async_task_engine().</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment">   *</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="comment">   * @return Reference to read-only `*(async_task_engine())`.</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment">   */</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>  <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow_1_1util.html#ac3e89a8a271b0ddc76ac2a0ce488dea4">util::Task_engine</a>&amp; <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2ed5dee327d3bca47fd7b720718a6ff8">async_task_engine_cref</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="comment"></span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="comment">   * Overwrites the value to be returned by next async_task_engine().</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment">   *</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment">   * See async_task_engine() doc header before using this.</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment">   *</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment">   * @param target_async_task_engine</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment">   *        See async_task_engine().</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="comment">   */</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2353700db774bce70be0862f6b68aff1">set_async_task_engine</a>(<a class="code hl_typedef" href="namespaceflow_1_1util.html#ac3e89a8a271b0ddc76ac2a0ce488dea4">util::Task_engine</a>* target_async_task_engine);</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment"></span> </div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">   * boost.asio-style asynchronous version that essentially performs</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">   * net_flow::Server_socket::sync_accept() in the background and invokes the given handler via the saved</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment">   * `Task_engine *(async_task_engine())`, as if by `post(Task_engine&amp;)`.</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment">   *</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">   * The semantics are identical to the similar `sync_accept()`, except that the operation does not block the</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment">   * calling thread; and the results are delivered to the supplied handler `on_result` instead of to the caller.</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment">   *</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">   * @tparam Rep</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="comment">   *         See net_flow::Server_socket::accept().</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="comment">   * @tparam Period</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment">   *         See net_flow::Server_socket::accept().</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="comment">   * @tparam Handler</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span><span class="comment">   *         A type such that if `Handler h`, then a function equivalent to `{ h(err_code, sock); }` can</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment">   *         be `post()`ed onto an `Task_engine`, with `const Error_code&amp; err_code` and</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment">   *         `net_flow::asio::Peer_socket sock`.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">   *        Handler to be executed asynchronously within the saved `Task_engine`.</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">   *        The error code and socket values passed to it, in that order, are identical</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span><span class="comment">   *        to those out-arg/returned values in net_flow::Server_socket::sync_accept().</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment">   *        Note: Use `bind_executor(S, F)` to bind your handler to the util::Strand `S`.</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span><span class="comment">   * @param reactor_pattern</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span><span class="comment">   *        See net_flow::Server_socket::sync_accept().</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><span class="comment">   * @param max_wait</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span><span class="comment">   *        See net_flow::Server_socket::sync_accept().</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">   */</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Rep, <span class="keyword">typename</span> Period, <span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">async_accept</a>(<span class="keyword">const</span> boost::chrono::duration&lt;Rep, Period&gt;&amp; max_wait,</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>                    <span class="keywordtype">bool</span> reactor_pattern,</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>                    <span class="keyword">const</span> Handler&amp; on_result);</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="comment"></span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment">   * Equivalent to `async_accept(duration::max(), false, on_result)`; i.e., `async_accept()`</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">   * with no timeout and in normal -- non-reactor-pattern -- handler mode.</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">   *</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">   * @tparam Handler</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="comment">   *         See other async_accept().</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">   *        See other async_accept().</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">   */</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">async_accept</a>(<span class="keyword">const</span> Handler&amp; on_result);</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="comment"></span> </div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span><span class="comment">   * Equivalent to `async_accept(max_wait, false, on_result)`; i.e., `async_accept()`</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="comment">   * with in normal -- non-reactor-pattern -- handler mode.</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="comment">   *</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span><span class="comment">   * @tparam Handler</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment">   *         See other async_accept().</span></div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span><span class="comment">   *        See other async_accept().</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span><span class="comment">   * @param max_wait</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span><span class="comment">   *        See other async_accept().</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment">   */</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Rep, <span class="keyword">typename</span> Period, <span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">async_accept</a>(<span class="keyword">const</span> boost::chrono::duration&lt;Rep, Period&gt;&amp; max_wait,</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>                    <span class="keyword">const</span> Handler&amp; on_result);</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="comment"></span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span><span class="comment">   * Equivalent to `async_accept(duration::max(), reactor_pattern, on_result)`; i.e., `async_accept()`</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span><span class="comment">   * with no timeout.</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span><span class="comment">   *</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment">   * @tparam Handler</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span><span class="comment">   *         See other async_accept().</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span><span class="comment">   *        See other async_accept().</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span><span class="comment">   * @param reactor_pattern</span></div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="comment">   *        See other async_accept().</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span><span class="comment">   */</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">async_accept</a>(<span class="keywordtype">bool</span> reactor_pattern, <span class="keyword">const</span> Handler&amp; on_result);</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span><span class="comment"></span> </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span><span class="comment">   * Convenience method that polymorphically casts from `net_flow::Server_socket::Ptr` to</span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="comment">   * subclass pointer `net_flow::asio::Server_socket::Ptr`.</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span><span class="comment">   * Behavior undefined if `serv` is not actually of the latter type.</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span><span class="comment">   * With this, one needn&#39;t do verbose `static_[pointer_]cast&lt;&gt;` or similar conversions.  For example:</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span><span class="comment">   * `auto serv = asio::Server_socket::cast(node.listen(...));` where `node` is a `net_flow::asio::Node&amp;`,</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span><span class="comment">   * and `serv` is auto-typed as `net_flow::asio::Server_socket::Ptr`.</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span><span class="comment">   *</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment">   * @param serv</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span><span class="comment">   *        Handle to a `serv` such that the true underlying concrete type is net_flow::asio::Server_socket.</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">   */</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>  <span class="keyword">static</span> <a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ac7ed30d29e4ba6f344e58299ed343773">Ptr</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a5f28c0b6770b68994aa95ae5df50afc2">cast</a>(<a class="code hl_typedef" href="classflow_1_1util_1_1Shared__ptr__alias__holder.html#aa4f1af88393042e60159a3a67f0accbc">net_flow::Server_socket::Ptr</a> serv);</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span> </div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  <span class="comment">// Friends.</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span><span class="comment"></span> </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span><span class="comment">  /// Similarly to the equivalent `friend` in net_flow::Peer_socket.</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a6db9d28bd448a131448276ee03de1e6d">  197</a></span><span class="comment"></span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1asio_1_1Node.html">Node</a>;<span class="comment"></span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">  /// As of this writing, it is needed for Node::serv_create_forward_plus_ctor_args().</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#aa929c4c93d814d46bf195c874af63fee">  199</a></span><span class="comment"></span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1Node.html">net_flow::Node</a>;</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><span class="comment"></span> </div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span><span class="comment">  /// Short-hand for the `Task_engine`-compatible accept `Handler` concrete type for class-internal code.</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">  204</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_class" href="classflow_1_1Function.html">Handler_func</a> = <a class="code hl_class" href="classflow_1_1Function.html">Function</a>&lt;void (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow.html#a29eaaa9d0fac4ce87d8b969222dbed09">Error_code</a>&amp; err_code, <a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Peer__socket.html#a3ee868ebd8acd1788a5bed8cf66a349e">Peer_socket::Ptr</a> new_sock)&gt;;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>  <span class="comment">// Constructors.</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span><span class="comment"></span> </div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span><span class="comment">   * Constructs object.</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span><span class="comment">   *</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="comment">   * @param logger</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span><span class="comment">   *        See superclass.</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span><span class="comment">   * @param child_sock_opts</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span><span class="comment">   *        See superclass.</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span><span class="comment">   */</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>  <span class="keyword">explicit</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a201bb6012ddffe83f9a1a3daf5e78645">Server_socket</a>(<a class="code hl_class" href="classflow_1_1log_1_1Logger.html">log::Logger</a>* logger, <span class="keyword">const</span> <a class="code hl_struct" href="structflow_1_1net__flow_1_1Peer__socket__options.html">Peer_socket_options</a>* child_sock_opts);</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="comment"></span> </div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span><span class="comment">   * De-templated implementation of all `async_accept()` methods.</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span><span class="comment">   *</span></div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span><span class="comment">   *        `handler_func(on_result)`, where `on_result` is the user&#39;s `async_*()` method arg.</span></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span><span class="comment">   * @param wait_until</span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span><span class="comment">   *        See `max_wait` arg on the originating `async_accept()` method.  This is absolute timeout time point</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">   *        derived from it; zero-valued if no timeout.</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">   * @param reactor_pattern</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="comment">   *        See `async_accept()`.</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span><span class="comment">   */</span></div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">async_accept_impl</a>(<a class="code hl_class" href="classflow_1_1Function.html">Handler_func</a>&amp;&amp; on_result, <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">Fine_time_pt</a>&amp; wait_until, <span class="keywordtype">bool</span> reactor_pattern);</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span><span class="comment"></span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="comment">   * Returns a functor that essentially performs `post()` `on_result` onto `*async_task_engine()` in a way suitable</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">   * for a boost.asio-compatible async-op.</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">   *</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">   * ### Rationale ###</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">   * See asio::Peer_socket::handler_func().</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="comment">   *</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span><span class="comment">   * @tparam Handler</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span><span class="comment">   *         See async_accept().</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment">   * @param on_result</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="comment">   *        See async_accept().</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="comment">   * @return Function to call from any context that will properly `post()` `on_result();` onto `*async_task_engine()`.</span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="comment">   */</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>  <a class="code hl_class" href="classflow_1_1Function.html">Handler_func</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#abcc92483255a34998be78cfd228555a1">handler_func</a>(Handler&amp;&amp; on_result);</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span> </div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>  <span class="comment">// Data.</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span><span class="comment"></span> </div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span><span class="comment">  /// See async_task_engine().</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ae236d96a176b209b217f04bb94119efe">  252</a></span><span class="comment"></span>  <a class="code hl_typedef" href="namespaceflow_1_1util.html#ac3e89a8a271b0ddc76ac2a0ce488dea4">util::Task_engine</a>* <a class="code hl_variable" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ae236d96a176b209b217f04bb94119efe">m_target_task_engine</a>;</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>}; <span class="comment">// class asio::Server_socket</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span> </div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span><span class="comment">// Free functions: in *_fwd.hpp.</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span><span class="comment">// Template implementations.</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span> </div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Rep, <span class="keyword">typename</span> Period, <span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">  260</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">Server_socket::async_accept</a>(<span class="keyword">const</span> boost::chrono::duration&lt;Rep, Period&gt;&amp; max_wait,</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>                                 <span class="keywordtype">bool</span> reactor_pattern,</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>                                 <span class="keyword">const</span> Handler&amp; on_result)</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>{</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">async_accept_impl</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">Handler_func</a>(on_result),</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>                    <a class="code hl_function" href="namespaceflow_1_1util.html#a5488415feb5570a6551892a7bdfeeec4">util::chrono_duration_from_now_to_fine_time_pt</a>(max_wait),</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>                    reactor_pattern);</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>}</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span> </div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#acfc27441490a10f4fc6bd7ae03bad35e">  270</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">Server_socket::async_accept</a>(<span class="keyword">const</span> Handler&amp; on_result)</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>{</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">async_accept_impl</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">Handler_func</a>(on_result), <a class="code hl_typedef" href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">Fine_time_pt</a>(), <span class="keyword">false</span>);</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>}</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span> </div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a04092288d62dd597fe2cec3677d4e9db">  276</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">Server_socket::async_accept</a>(<span class="keywordtype">bool</span> reactor_pattern, <span class="keyword">const</span> Handler&amp; on_result)</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>{</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">async_accept_impl</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">Handler_func</a>(on_result), <a class="code hl_typedef" href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">Fine_time_pt</a>(), reactor_pattern);</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>}</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Rep, <span class="keyword">typename</span> Period, <span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a153ebee4658058400ed790c34dbe6394">  282</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">Server_socket::async_accept</a>(<span class="keyword">const</span> boost::chrono::duration&lt;Rep, Period&gt;&amp; max_wait,</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>                                 <span class="keyword">const</span> Handler&amp; on_result)</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>{</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">async_accept_impl</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">Handler_func</a>(on_result),</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>                    <a class="code hl_function" href="namespaceflow_1_1util.html#a5488415feb5570a6551892a7bdfeeec4">util::chrono_duration_from_now_to_fine_time_pt</a>(max_wait),</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>                    <span class="keyword">false</span>);</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span>}</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span> </div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Handler&gt;</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#abcc92483255a34998be78cfd228555a1">  291</a></span><a class="code hl_class" href="classflow_1_1Function.html">Server_socket::Handler_func</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#abcc92483255a34998be78cfd228555a1">Server_socket::handler_func</a>(Handler&amp;&amp; on_result)</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span>{</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  <span class="keyword">using </span>boost::asio::post;</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>  <span class="keyword">using </span>boost::asio::bind_executor;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>  <span class="keyword">using </span>boost::asio::get_associated_executor;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span> </div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>  <span class="comment">/* This mirrors Peer_socket::handler_func() exactly (just different signature on on_result()).  Comments light.</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span><span class="comment">   * @todo Maybe there&#39;s a way to generalize this with template param-packs or something. */</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span> </div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>  <span class="keywordflow">return</span> [<span class="keyword">this</span>, on_result = std::move(on_result)]</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>           (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow.html#a29eaaa9d0fac4ce87d8b969222dbed09">Error_code</a>&amp; err_code, <a class="code hl_typedef" href="classflow_1_1net__flow_1_1asio_1_1Peer__socket.html#a3ee868ebd8acd1788a5bed8cf66a349e">Peer_socket::Ptr</a> new_sock)</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>           <span class="keyword">mutable</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  {</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span>    <span class="keyword">const</span> <span class="keyword">auto</span> executor = get_associated_executor(on_result);</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>    post(*(<a class="code hl_function" href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a88c5b9b8fee3429f28d9f1dfbe1359c2">async_task_engine</a>()),</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>         bind_executor(executor,</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>                       [err_code, new_sock, on_result = std::move(on_result)]</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>    {</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>      on_result(err_code, new_sock);</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>    }));</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>  };</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>} <span class="comment">// Server_socket::handler_func()</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span> </div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>} <span class="comment">// namespace flow::net_flow::asio</span></div>
<div class="ttc" id="aclassflow_1_1Function_html"><div class="ttname"><a href="classflow_1_1Function.html">flow::Function</a></div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00512">common.hpp:512</a></div></div>
<div class="ttc" id="aclassflow_1_1log_1_1Logger_html"><div class="ttname"><a href="classflow_1_1log_1_1Logger.html">flow::log::Logger</a></div><div class="ttdoc">Interface that the user should implement, passing the implementing Logger into logging classes (Flow'...</div><div class="ttdef"><b>Definition:</b> <a href="log_8hpp_source.html#l01280">log.hpp:1284</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Node_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1Node.html">flow::net_flow::Node</a></div><div class="ttdoc">An object of this class is a single Flow-protocol networking node, in the sense that: (1) it has a di...</div><div class="ttdef"><b>Definition:</b> <a href="node_8hpp_source.html#l00930">node.hpp:934</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Server__socket_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1Server__socket.html">flow::net_flow::Server_socket</a></div><div class="ttdoc">A server socket able to listen on a single Flow port for incoming connections and return peer sockets...</div><div class="ttdef"><b>Definition:</b> <a href="server__socket_8hpp_source.html#l00118">server_socket.hpp:126</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Node_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Node.html">flow::net_flow::asio::Node</a></div><div class="ttdoc">A subclass of net_flow::Node that adds the ability to easily and directly use net_flow sockets in gen...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2node_8hpp_source.html#l00234">node.hpp:236</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Peer__socket_html_a3ee868ebd8acd1788a5bed8cf66a349e"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Peer__socket.html#a3ee868ebd8acd1788a5bed8cf66a349e">flow::net_flow::asio::Peer_socket::Ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; Peer_socket &gt; Ptr</div><div class="ttdoc">Short-hand for shared_ptr to Peer_socket.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2peer__socket_8hpp_source.html#l00046">peer_socket.hpp:46</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html">flow::net_flow::asio::Server_socket</a></div><div class="ttdoc">A net_flow::Server_socket that adds integration with boost.asio.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00038">server_socket.hpp:41</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a01233841b5cde6b22a2ae2481c14c51b"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a01233841b5cde6b22a2ae2481c14c51b">flow::net_flow::asio::Server_socket::async_accept_impl</a></div><div class="ttdeci">void async_accept_impl(Handler_func &amp;&amp;on_result, const Fine_time_pt &amp;wait_until, bool reactor_pattern)</div><div class="ttdoc">De-templated implementation of all async_accept() methods.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00060">server_socket.cpp:60</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a201bb6012ddffe83f9a1a3daf5e78645"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a201bb6012ddffe83f9a1a3daf5e78645">flow::net_flow::asio::Server_socket::Server_socket</a></div><div class="ttdeci">Server_socket(log::Logger *logger, const Peer_socket_options *child_sock_opts)</div><div class="ttdoc">Constructs object.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00028">server_socket.cpp:28</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a2353700db774bce70be0862f6b68aff1"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2353700db774bce70be0862f6b68aff1">flow::net_flow::asio::Server_socket::set_async_task_engine</a></div><div class="ttdeci">void set_async_task_engine(util::Task_engine *target_async_task_engine)</div><div class="ttdoc">Overwrites the value to be returned by next async_task_engine().</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00052">server_socket.cpp:52</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a2e4fc3f1516d1e3af68eb669aace3704"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2e4fc3f1516d1e3af68eb669aace3704">flow::net_flow::asio::Server_socket::~Server_socket</a></div><div class="ttdeci">~Server_socket() override</div><div class="ttdoc">Boring virtual destructor as in superclass. See notes there.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00036">server_socket.cpp:36</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a2ed5dee327d3bca47fd7b720718a6ff8"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a2ed5dee327d3bca47fd7b720718a6ff8">flow::net_flow::asio::Server_socket::async_task_engine_cref</a></div><div class="ttdeci">const util::Task_engine &amp; async_task_engine_cref() const</div><div class="ttdoc">Read-only version of async_task_engine().</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00047">server_socket.cpp:47</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a5f28c0b6770b68994aa95ae5df50afc2"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a5f28c0b6770b68994aa95ae5df50afc2">flow::net_flow::asio::Server_socket::cast</a></div><div class="ttdeci">static Ptr cast(net_flow::Server_socket::Ptr serv)</div><div class="ttdoc">Convenience method that polymorphically casts from net_flow::Server_socket::Ptr to subclass pointer n...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00107">server_socket.cpp:107</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a88c5b9b8fee3429f28d9f1dfbe1359c2"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a88c5b9b8fee3429f28d9f1dfbe1359c2">flow::net_flow::asio::Server_socket::async_task_engine</a></div><div class="ttdeci">util::Task_engine * async_task_engine()</div><div class="ttdoc">Pointer (possibly null) for the flow::util::Task_engine used by any coming async I/O calls and inheri...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8cpp_source.html#l00041">server_socket.cpp:41</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_a8f374618b5d754321ac288cd6f1f50ea"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#a8f374618b5d754321ac288cd6f1f50ea">flow::net_flow::asio::Server_socket::async_accept</a></div><div class="ttdeci">void async_accept(const boost::chrono::duration&lt; Rep, Period &gt; &amp;max_wait, bool reactor_pattern, const Handler &amp;on_result)</div><div class="ttdoc">boost.asio-style asynchronous version that essentially performs net_flow::Server_socket::sync_accept(...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00260">server_socket.hpp:260</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_abcc92483255a34998be78cfd228555a1"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#abcc92483255a34998be78cfd228555a1">flow::net_flow::asio::Server_socket::handler_func</a></div><div class="ttdeci">Handler_func handler_func(Handler &amp;&amp;on_result)</div><div class="ttdoc">Returns a functor that essentially performs post() on_result onto *async_task_engine() in a way suita...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00291">server_socket.hpp:291</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_ac7ed30d29e4ba6f344e58299ed343773"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ac7ed30d29e4ba6f344e58299ed343773">flow::net_flow::asio::Server_socket::Ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; Server_socket &gt; Ptr</div><div class="ttdoc">Short-hand for shared_ptr to Server_socket.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00046">server_socket.hpp:46</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_ad1781485abf0d98d470863089a0a9b6c"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ad1781485abf0d98d470863089a0a9b6c">flow::net_flow::asio::Server_socket::Handler_func</a></div><div class="ttdeci">Function&lt; void(const Error_code &amp;err_code, Peer_socket::Ptr new_sock)&gt; Handler_func</div><div class="ttdoc">Short-hand for the Task_engine-compatible accept Handler concrete type for class-internal code.</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00204">server_socket.hpp:204</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1asio_1_1Server__socket_html_ae236d96a176b209b217f04bb94119efe"><div class="ttname"><a href="classflow_1_1net__flow_1_1asio_1_1Server__socket.html#ae236d96a176b209b217f04bb94119efe">flow::net_flow::asio::Server_socket::m_target_task_engine</a></div><div class="ttdeci">util::Task_engine * m_target_task_engine</div><div class="ttdoc">See async_task_engine().</div><div class="ttdef"><b>Definition:</b> <a href="asio_2server__socket_8hpp_source.html#l00252">server_socket.hpp:252</a></div></div>
<div class="ttc" id="aclassflow_1_1util_1_1Shared__ptr__alias__holder_html_aa4f1af88393042e60159a3a67f0accbc"><div class="ttname"><a href="classflow_1_1util_1_1Shared__ptr__alias__holder.html#aa4f1af88393042e60159a3a67f0accbc">flow::util::Shared_ptr_alias_holder&lt; boost::shared_ptr&lt; Server_socket &gt; &gt;::Ptr</a></div><div class="ttdeci">boost::shared_ptr&lt; Server_socket &gt; Ptr</div><div class="ttdoc">Short-hand for ref-counted pointer to mutable values of type Target_type::element_type (a-la T*).</div><div class="ttdef"><b>Definition:</b> <a href="shared__ptr__alias__holder_8hpp_source.html#l00125">shared_ptr_alias_holder.hpp:125</a></div></div>
<div class="ttc" id="anamespaceflow_1_1net__flow_1_1asio_html"><div class="ttname"><a href="namespaceflow_1_1net__flow_1_1asio.html">flow::net_flow::asio</a></div><div class="ttdoc">Contains classes that add boost.asio integration to the main Flow-protocol classes such as net_flow::...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2node_8cpp_source.html#l00024">node.cpp:25</a></div></div>
<div class="ttc" id="anamespaceflow_1_1util_html_a5488415feb5570a6551892a7bdfeeec4"><div class="ttname"><a href="namespaceflow_1_1util.html#a5488415feb5570a6551892a7bdfeeec4">flow::util::chrono_duration_from_now_to_fine_time_pt</a></div><div class="ttdeci">Fine_time_pt chrono_duration_from_now_to_fine_time_pt(const boost::chrono::duration&lt; Rep, Period &gt; &amp;dur)</div><div class="ttdoc">Helper that takes a non-negative duration of arbitrary precision/period and converts it to Fine_durat...</div><div class="ttdef"><b>Definition:</b> <a href="util_2detail_2util_8hpp_source.html#l00042">util.hpp:42</a></div></div>
<div class="ttc" id="anamespaceflow_1_1util_html_ac3e89a8a271b0ddc76ac2a0ce488dea4"><div class="ttname"><a href="namespaceflow_1_1util.html#ac3e89a8a271b0ddc76ac2a0ce488dea4">flow::util::Task_engine</a></div><div class="ttdeci">boost::asio::io_context Task_engine</div><div class="ttdoc">Short-hand for boost.asio event service, the central class of boost.asio.</div><div class="ttdef"><b>Definition:</b> <a href="util__fwd_8hpp_source.html#l00135">util_fwd.hpp:135</a></div></div>
<div class="ttc" id="anamespaceflow_html_a29eaaa9d0fac4ce87d8b969222dbed09"><div class="ttname"><a href="namespaceflow.html#a29eaaa9d0fac4ce87d8b969222dbed09">flow::Error_code</a></div><div class="ttdeci">boost::system::error_code Error_code</div><div class="ttdoc">Short-hand for a boost.system error code (which basically encapsulates an integer/enum error code and...</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00508">common.hpp:508</a></div></div>
<div class="ttc" id="anamespaceflow_html_a9d9cc2eeb10d398cff5591d446b763b8"><div class="ttname"><a href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">flow::Fine_time_pt</a></div><div class="ttdeci">Fine_clock::time_point Fine_time_pt</div><div class="ttdoc">A high-res time point as returned by Fine_clock::now() and suitable for precise time math in general.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00413">common.hpp:413</a></div></div>
<div class="ttc" id="anet__flow__fwd_8hpp_html"><div class="ttname"><a href="net__flow__fwd_8hpp.html">net_flow_fwd.hpp</a></div></div>
<div class="ttc" id="aserver__socket_8hpp_html"><div class="ttname"><a href="server__socket_8hpp.html">server_socket.hpp</a></div></div>
<div class="ttc" id="astructflow_1_1net__flow_1_1Peer__socket__options_html"><div class="ttname"><a href="structflow_1_1net__flow_1_1Peer__socket__options.html">flow::net_flow::Peer_socket_options</a></div><div class="ttdoc">A set of low-level options affecting a single Peer_socket.</div><div class="ttdef"><b>Definition:</b> <a href="options_8hpp_source.html#l00035">options.hpp:36</a></div></div>
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